Windows 11 is Microsoft's desktop operating system, whose updates, security controls, and flaws affect the protection of PCs and their data.
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Windows 11 is Microsoft’s desktop operating system for personal computers and organizational endpoints. Its security model can use hardware-backed protections such as TPM 2.0 and Secure Boot, while virtualization-based security (VBS), credential isolation, Microsoft Defender, and Windows Hello help protect the boot process, credentials, and user sessions. These controls depend on compatible hardware, enabled policies, and correctly configured drivers and applications; they are not automatic protection against every attack.
For security teams, Windows 11 is a major vulnerability-management and endpoint-monitoring scope. Monthly updates address flaws that may enable privilege escalation, remote code execution, or security-control bypass, while third-party software, kernel drivers, and misconfigured services add attack surface. Organizations should maintain supported builds, test and deploy patches, verify Secure Boot and VBS posture, protect recovery and administrator credentials, and retain telemetry useful for detecting persistence or lateral movement. Hardware and configuration differences also matter when assessing exposure and forensic evidence.
Microsoft announced on Wednesday that systems running Windows 10 Enterprise LTSB 2016 and Home and Pro editions of Windows 11 24H2 will stop receiving updates in three months. [...]
Microsoft is blocking this month's Windows 11 security updates on some Dell devices because they are causing shutdowns and performance issues. [...]
Microsoft has released Windows 11's June 2026 Update for version 25H2, 24H2, and 23H2, bringing fixes for over 570 security issues. [...]